package com.qingcloud.adminbackend.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class CrosInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {

        response.setHeader("Access-control-Allow-Origin", request.getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
        response.setHeader("Access-Control-Allow-Headers", request.getHeader("Access-Control-Request-Headers"));
        // 是否允许发送Cookie，默认Cookie不包括在CORS请求之中。设为true时，表示服务器允许Cookie包含在请求中。
        response.setHeader("Access-Control-Allow-Credentials", "true");
        if ("OPTIONS".equals(request.getMethod().toUpperCase())) {
            return true;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}
